Why javax.security.* doesn't work for me ?

I am newbie in Java. Recently I met a problem which confused my a lot. I am a class named CSecurity which can throw LoginException. Code sample is
public class CSecurity
userLogin() throws LoginException
When compiling it, "unresolved symbol - Can't locate LoginException class" error message appears, although I put "import javax.security.*;" in the front. Compilation succeeds, if I change it to "import javax.security.auth.login.LoginException;". My question is why character "*" doesn't work at all, since it is supposed to work. I assume "import javax.security.*;" should import all class under security branch. Am I wrong about this ?
Regards,
WenBin

when you import * it doesn't import sub packages, only the specified one.
so you would need to do..
import javax.security.auth.login.*;

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